1775 results about "Linear motion" patented technology

A vehicle-mounted GNSS positioning method based on multi-motion model interaction includes: establishing a position-constant velocity (PCV) model and a position-constant steering angular velocity (PCSAV) model for two attitudes of a carrier (i.e., linear motion and turning motion) respectively to obtain a state estimation vector and a state transition matrix of the carrier of the PCV model and the PCSAV model at a previous moment, introducing an interacting multiple model (INM), establishing a heuristic position-velocity filtering (HPV)-IMM model based on the IMM model to achieve an information filtering interaction between the PCV model and the PCSAV model, and obtaining a state estimation vector and an error covariance matrix of the carrier at a current moment, so as to obtain a position and velocity of the carrier at the current moment. The present disclosure solves the problem of low accuracy of a traditional single kinematic model in multi-motion attitude vehicle positioning.

The utility model relates to the technical field of precise driving and positioning, and discloses a linear motor type electric screw which comprises a screw rod, a shell, a driving mechanism, a mechanism seat and a threaded pipe. The driving mechanism is arranged in a cavity defined by the shell and the mechanism base. The driving mechanism comprises a flexible hinge, piezoelectric ceramics and a pre-tightening spring. The flexible hinge comprises a first clamping jaw and a second clamping jaw. And the first clamping jaw and the second clamping jaw provide rotating force for the screw rod under the action of the piezoelectric ceramics. And the pre-tightening springs are used for applying pre-tightening force between the first clamping jaw and the screw rod and between the second clamping jaw and the screw rod. The threaded pipe is used for supporting the threaded rod and being connected with an external mechanism. According to the utility model, the piezoelectric ceramic is adopted for driving and the flexible hinge is combined, so that precise linear motion control is realized, and the touch-free adjusting device has the characteristics of high resolution, high precision and compact structure, and realizes touch-free adjustment of the optical adjusting bracket which is difficult to touch. A plurality of linear motor type electric screws are combined for use, so that two-dimensional or three-dimensional motion control can be realized.

The invention discloses a wind turbine blade semi-coupling aeroelastic modeling method considering nonlinear deformation, and belongs to the technical field of fan simulation calculation. In combination with calculation parameters used by three-party software, establishing a blade structured load model and a blade correction aerodynamic model, calculating an aerodynamic load and a structural load, and superposing: superposing the aerodynamic load, the gravity load and the centrifugal force load of the blade as an external load of a nonlinear structure control equation of the blade, and taking the external load as a calculation parameter; according to the method, the blade nonlinear structure model and the semi-coupling simulation process of the three-party wind turbine simulation software are constructed, and under the same simulation environment and load conditions, the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation, so that the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation calculation. The higher-precision non-linear motion response characteristics of the super-long flexible wind turbine blade are calculated, and a good effect can be achieved in the aspects of initial structure design and response evaluation of the large wind turbine blade.

The invention relates to the technical field of transformer coil detection, and discloses a detection device for a transformer coil, which comprises a base frame, the driving mechanism is installed on the base frame and used for providing linear motion in the X direction, the Y direction and the Z direction; according to the scheme, by means of the detection mode that spiral scanning motion is combined with self-adaptive contact and laser ranging, the fatal defects that manual detection is low in efficiency, high in subjectivity and prone to making mistakes and missing detection are overcome, complete three-dimensional shape data of the surface of the coil can be rapidly and accurately obtained, and the detection accuracy is improved. According to the method, local fine defects which are difficult to discover manually can be detected, the reliability and the consistency of detection results are improved, objective and quantitative data support is provided for evaluating the winding quality, the mechanical strength and the long-term operation reliability of a transformer coil, and the manufacturing quality of a transformer and the operation safety of a power grid are guaranteed.

The invention provides a vibration test bench, and relates to a vibration test device, and the vibration test bench comprises a pedestal, and a plurality of vibration frames which are arranged on the pedestal in parallel at intervals and are sequentially arranged on the pedestal from top to bottom; each sliding guide rail is arranged between every two adjacent vibration frames and between the vibration frame on the lowermost layer and the base, and the guide directions of the sliding guide rails are different from one another; each driving mechanism is fixedly connected to the vibration frame located on the lower layer or the base and drives the vibration frame located on the upper layer to do reciprocating rectilinear motion along the corresponding sliding guide rail. Each locking mechanism is arranged between every two adjacent vibrating frames and between the vibrating frames and the base, and each locking mechanism can selectively lock the reciprocating motion of the vibrating frame located on the upper layer; the control unit is in communication connection with all the driving mechanisms and independently controls operation of all the driving mechanisms. The vibration test bench can realize multi-degree-of-freedom movement, and has a broadband vibration frequency / amplitude adjusting function.

The invention belongs to the technical field of side slope protection equipment, and particularly discloses an energy dissipation buffer device for a side slope flexible protection net, the energy dissipation buffer device comprises a connecting rod, a connecting cylinder, an elastic piece and a rope, the connecting rod comprises a traction section and an extending section, the extending section is of a screw rod structure, the connecting cylinder comprises a cylinder body and a disc body, a first through hole is formed in the closed end of the cylinder body, and the elastic piece is arranged in the first through hole; a tooth block matched with the spiral groove is arranged on the first through hole; the cylinder body is arranged on the extending-in section in a sleeving manner, and the extending-in section can penetrate out of the first through hole; when the stretching-in section moves along with the traction section and penetrates out of the first through hole, the tooth block slides in the spiral groove, and linear sliding motion of the stretching-in section is converted into rotation of the barrel; the elastic piece is located in the cylinder, one end of the elastic piece is attached to the stretching-in section, the other end of the elastic piece is attached to the cylinder, and one ends of the ropes are fixed to the traction section. The four core pain points of'one-time consumption, low energy dissipation efficiency, high maintenance risk and concentrated local stress' of a traditional slope buffering technology are effectively solved.

The invention provides an ocean carrier follow-up wave power generation device which comprises a cylindrical linear generator, a linear motion sliding table, a bistable motion unit and a steering adjusting unit, the cylindrical linear generator is placed on the linear motion sliding table, and the whole motor can slide; the two sides of the upper sliding rail are fixedly connected with an upper supporting rod frame in the bistable motion unit, the lower sliding rail is connected with a bistable motion frame in the bistable motion unit, and the bistable motion unit is placed on the steering adjusting unit to form the whole structure of the power generation device. The device can be mounted on various suitable ocean carriers, and the power generation efficiency of the power generation device is improved by utilizing a bistable motion principle; by combining a cylindrical linear generator, a linear motion sliding table, a bistable motion unit with a bistable motion spring as a main tool and a steering adjusting unit, bistable motion power generation based on a cross potential energy trap is achieved, the energy capture efficiency when the wave energy frequency is low is improved, and the power generation adaptability of the device to different sea conditions is improved.

A multi-axial spine testing system includes a physiological motion unit (PMU); a uni-axial test frame having an input; and a fixture configured to be attached to the test frame and facilitates a plurality of primary motions of one or more of the PMU and the fixture. The plurality of primary motions includes a linear motion of the input and a rotational movement of an output. The fixture has an upper assembly directly or indirectly coupled to the input. The upper assembly transfers the linear motion (Tz) of the actuator to the rotational movement (Rx) of the output. The upper assembly and lower assembly apply a bending moment (MX) and an axial compression (Fz) to the PMU. An external transducer collects data related to or generated by at least the plurality of primary motions. The fixture simultaneously provides the bending motion and axial compression to the PMU.

The invention relates to a polishing performance evaluation method and device and a polishing system for improving the polishing performance. The polishing performance evaluation method comprises the steps that the track lengths of all abrasive particles of a polishing disc are obtained; based on the track lengths of all the abrasive particles, calculating to obtain a track average value and a variance; and based on the trajectory average value and the variance, trajectory distribution uniformity is obtained through calculation. The wafer polishing device has the advantages that the rotating motion of the polishing disc unit and the linear motion of the polishing pad unit are combined, so that the wafer polishing uniformity can be improved, the polishing time is shortened, and the polishing efficiency is improved; the rotating motion of the polishing disc unit and the linear motion of the polishing pad unit are combined, so that uneven abrasion of the polishing pad unit can be avoided, the service life of the polishing pad unit is prolonged, and the cost is reduced.

The invention relates to the technical field of automatic assembly equipment, and discloses vacuum cup cover sealing element automatic assembly and press fit equipment which comprises a frame, a control device is arranged on the side of the frame, an XY-axis feeding device is arranged on the frame, a movable frame is arranged at the feeding end of the XY-axis feeding device, a connecting frame is arranged on the movable frame, and the connecting frame is connected with the control device. An assembling and pressing assembly is arranged on the connecting frame; the assembling and pressing assembly comprises two mounting seats arranged in the connecting frame, telescopic rods are arranged at the bottom ends of the two mounting seats, mounting discs are fixed to the telescopic ends of the telescopic rods, sliding blocks are arranged in the mounting discs, arc-shaped plates are fixed to the exteriors of the sliding blocks, and second connecting plates are movably arranged in the arc-shaped plates; when the air cylinder drives the movable plate to slide axially, through meshing transmission of the boss and the spiral groove, linear motion is converted into circumferential rotation of the mounting rod, then the sliding block is guided to expand in the radial direction through the arc-shaped groove of the connecting disc, the second connecting plate evenly clamps the sealing ring, and it is guaranteed that grabbing and positioning are accurate.

The invention provides a three-degree-of-freedom micro-motion bonding head for a wafer bonding machine, relates to the technical field of ultra-precision piezoelectric driving, and aims to solve the problems that a traditional bonding head structure is low in response speed and poor in multi-degree-of-freedom cooperative micro-motion stability. An external frame unit and an internal frame unit are fixedly assembled on the micropositioner main substrate; the external frame unit comprises an X-direction piezoelectric actuator, a Y-direction piezoelectric actuator, an X-direction balance weight, a Y-direction balance weight and a parallel guiding flexible hinge, wherein the X-direction balance weight and the Y-direction balance weight are symmetrically distributed, and the external frame unit is used for achieving X-direction linear motion and Y-direction linear motion. The internal frame unit comprises a Z-direction piezoelectric actuator, a wafer bonding head and a tandem decoupling flexible hinge, and is used for realizing Z-direction linear motion; the piezoelectric actuator is used as a driving element and is matched with the flexible hinge to form a guiding and transmission mechanism, three-degree-of-freedom micro-motion of the bonding head in space is achieved, and meanwhile the structural design is optimized to improve motion decoupling performance, compactness and adaptability of stroke and precision.

The invention discloses a winding drum rope arranging device which comprises a winding drum base, a winding drum, a gear transmission mechanism, a lead screw, a swing roller assembly, a convex shaft and a reversing assembly. The reversing assembly comprises a power assembly and a reversing clutch assembly. The gear transmission mechanism and the lead screw convert rotary motion of the winding drum into linear motion of the swing roller assembly, so that the winding drum moves along with the rope coiling position. When the winding drum is full of one layer, the swing roller assembly reaches the limit deviation position to drive the protruding shaft to rotate, the power assembly amplifies the rotation angle and conducts one-way transmission, and the reversing clutch assembly changes the rotation direction of the lead screw to achieve reversing. A pure mechanical structure is adopted, a sensor and an electric control system are not needed, reliability is high, and cost is low; the swing roller assembly reduces abrasion of the steel wire rope and limits the support to guarantee accurate movement; rope arrangement synchronization is achieved through the transmission ratio design, the reversing assembly has the precise reversing function and the torque protection function, the rope disorder and rope sinking phenomena can be effectively avoided, and the service life of the steel wire rope is prolonged.

The invention relates to a multistage planetary roller lead screw pair structure, and belongs to the technical field of electromechanical servo transmission. The linear actuator comprises a first-stage lead screw, a first-stage pin roller, a first-stage nut, an angular contact bearing II, a first-stage actuator cylinder, a second-stage lead screw, a second-stage pin roller, a second-stage nut, a shell and an adapter shaft. Therefore, a nested structure of the first-stage planetary roller screw pair and the second-stage planetary roller screw pair is formed. The large working stroke can be provided within the small retraction size, and the large bearing capacity can be provided through the small radial size; meanwhile, the linear motion speed ratio of different graded lead screw pairs is controlled by adjusting the thread lead of the first-stage lead screw and the second-stage lead screw, accurate control over the motion speed of the tail end effective load is achieved, a guide structure within the stroke range is designed for each stage of nut, and high stability of the tail end output load of the structure can be achieved.

The invention discloses a five-axis sample stage applied to a scanning electron microscope, and belongs to the technical field of electron microscopes. The sample table comprises a Z-axis movement mechanism, a T-axis rotation mechanism, an X-axis movement mechanism, a Y-axis movement mechanism, an R-axis rotation mechanism and a sample table body. All the shafts achieve precise linear or rotary motion through crossed roller guide rails, vacuum motors are adopted for driving, a grating ruler, a travel switch and a limiting block are matched to guarantee positioning precision and motion limiting, and finally five-axis linkage of X-axis and Y-axis orthogonal linear motion, Z-axis vertical lifting, T-axis inclination and R-axis 360-degree rotation is achieved. The device has the advantages of multi-degree-of-freedom omnibearing observation, high-precision positioning, high stability of a vacuum environment, improvement of operation efficiency and the like, can meet the requirements of a scanning electron microscope on multi-angle and high-precision observation of a sample, and is suitable for micro-topography analysis in the fields of material science, electronic manufacturing and the like.

A linear motion guide apparatus that is easily assembled is provided. The linear motion guide apparatus includes: two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element; and a cage configured to hold the rolling element and hold a gear engaging with a meshing portion provided to at least one of the two guide rails. The cage includes: a first split body in which a rolling element holding portion that holds the rolling element and a gear holding portion that holds the gear are integrally formed; and a second split body in which a rolling element holding portion that holds the rolling element and a gear holding portion that holds the gear are integrally formed. The first split body and the second split body are joined to each other.

The invention discloses a floor sweeping machine mop mechanism and a floor sweeping robot, the floor sweeping machine mop mechanism comprises a shell, a fixing frame, a cleaning assembly, a connecting component, a linear driving component, a shielding cover, a linkage transmission component and a swing driving component, the linear driving component is used for driving the connecting component to do linear motion, and then the cleaning assembly is driven to do linear motion; a pure mechanical swing driving component is utilized to enable the cleaning assembly to be switched between a storage lifting state and a storage landing state along with movement of the cleaning assembly. A pure mechanical linkage transmission component is utilized to drive the shielding cover to slide in a self-adaptive mode according to up-and-down swinging of the mop cover cap so as to expose the roller mop or shield the roller mop, the number of motors is reduced, product cost is reduced, the structural size can be reduced easily, a control program is simplified, and the service life of the product can be prolonged easily.

The utility model relates to the technical field of precision optical devices, and discloses a piezoelectric adjusting frame which comprises a fixed plate, a movable plate, an elastic connecting assembly and a piezoelectric screw. And the movable plate corresponds to the fixed plate. The two ends of the elastic connecting assembly are connected with the fixed plate and the movable plate correspondingly. The piezoelectric screw comprises a threaded pipe and a screw rod. A first through hole is formed in the fixing plate. The threaded pipe penetrates through the first through hole and is fixed to the fixing plate. The screw abuts against the movable plate and is used for pushing the movable plate to be close to or away from the fixed plate. The moving plate comprises an X-axis moving plate and a Y-axis moving plate which are adjacent to each other. The three piezoelectric screws are used for pushing the movable plate to achieve X-axis deflection, Y-axis deflection and Z-axis linear motion. According to the utility model, the deflection angle and the linear movement range are larger, the positioning is more accurate, and the response is quicker. The X axis and the Y axis have the same deflection axis, and coupling between the axes is small. The overall structure is compact, control is easy, and the service life is long.

A method for laser welding two laser-absorbing components (12, 13) comprises providing two laser-absorbing components (12, 13) to be welded, providing a joining device (2) with two component holders (3, 4) for each of the components (12, 13), inserting the components (12, 13) into the joining device (2), shining laser radiation onto the respective welding contours of the components (12, 13) in a respective irradiation position of the component holders (3, 4), moving the component holders (3, 4) with the components (12, 13) into a joining position and applying a clamping force to the components (12, 13) in the joining position to join the components (12, 13) along the welding contours. The relocation of the component holders (3, 4) with the components (12, 13) from the respective irradiation position to the joining position is carried out by two at least partially sequential linear movements of the component holders (3, 4) relative to each other.

The application discloses a full-automatic cutting, dropping and sample printing integrated machine, which comprises a rack, wherein a powder tank area, a cutting device, a dropping bottle area, a standby area, a first dyeing device, a second dyeing device and a gauze tube area are sequentially arranged on the rack; a first linear motion module is arranged on the surface of the rack; and a first grabbing device and a second grabbing device are drivingly connected to the first linear motion module. The cutting device, the first dyeing device and the second dyeing device are arranged on the rack, and the powder tank, the dropping bottle and the gauze tube and the gauze tube are moved to the designated positions for processing by the first grabbing device and the second grabbing device, so that the cutting, dropping and sample printing dyeing operations are automatically completed.

The invention relates to a knitting machine and particularly relates to a controller for a yarn changer. The controller comprises a controller skeleton arranged on an outer plate of a yarn changer main body, a transfer bar, a digital circuit and a drive mechanism for driving the transfer bar to carry out linear motion, wherein the transfer bar is connected with the controller skeleton in a sliding manner; the transfer bar drives a yarn clamping and shearing device of the yarn changer to complete yarn selecting and yarn guiding actions while carrying out linear motion; the digital circuit and the drive mechanism are arranged on the controller skeleton separately; and the digital circuit is electrically connected with a drive mechanism. External drive is not needed, and the drive mechanism can be controlled to drive the transfer bar to carry out linear motion by virtue of the digital circuit, so that the transfer bar drives the yarn clamping and shearing device to complete the yarn selecting and yarn guiding actions, and independent control on yarn selecting and yarn guiding of the yarn changer is achieved; and the controller is small in impact vibration, high in applicability, stable in working, simple in structure and beneficial to improvement of the production stability of the knitting machine.

A reciprocating linear movement massaging apparatus, having a shell, a massaging assembly provided in the shell, a driving mechanism for driving the massaging assembly to perform reciprocating linear movement axially along the shell, and an electric control device for controlling the driving mechanism; the driving mechanism comprises a stator assembly and a mover assembly, an air gap is provided between the stator assembly and the mover assembly; the stator assembly comprises (an) annular coil(s) provided in the shell, the mover assembly comprises a plurality of magnets provided in the annular coil(s), the plurality of magnets enclose to be an annular magnet; the annular magnet is transmissively connected with the massaging assembly and the massaging assembly is located in an annular space enclosed by the annular magnet, and an open cavity is provided in the massaging assembly for receiving a human part to be massaged.

The invention provides a machine tool and a workpiece machining method, the machine tool includes: a workpiece support device having a table for supporting a workpiece; a first machining device having a machining head capable of supporting a first rotary tool for machining the workpiece supported by the table, and a plurality of linear movement devices for moving the machining head in three dimensions; and a first robot that has a multi-joint arm that changes the position and orientation of the second rotary tool, and that machines the workpiece supported by the table using the second rotary tool. The workpiece support device has a first drive device that rotates the table about a first axis.

Provided is a substrate storage container that can make locking mechanisms metal-free, also make locking claws of the locking mechanisms operate smoothly and ensure sufficient sealing performance of the lid. A locking claw 40 is comprised of a locking block 41 that can move linearly in an inside-outside direction of the lid body while being held between a pair of locking mechanism guide blocks of a lid 10 and can swing in a thickness direction of the lid body, joint bars 44 that are joined to an advancing / retracting bar 34 of a locking mechanism 30, and cam bosses 46 that are fitted into cam grooves 17 of the locking mechanism guide blocks. The locking block 41, the joint bars 44 and the cam bosses 46 are formed integrally from a molding material containing resin. A depressed portion is formed in the locking block 41, and a resin pin 49 is supported between both side ends of the depressed portion with a resin pressing roller 50 fitted on the resin pin 49. The cam boss has a pair of flat facets 47 formed on its peripheral surface. The cam groove 17 is formed of divided sections including: a straight linear-motion groove 19 that is in contact with the flat facets 47 to limit the swing of the locking claw 40; and an arcuate swinging-motion groove to allow the locking claw 40 to swing.

A turning machining device for a spherical grating comprises a rotary motion shaft, an X-axis linear motion module capable of driving the rotary motion shaft to move in the X direction is installed below the rotary motion shaft, and a tool plate used for fixing a spherical grating piece to be machined is fixedly installed on the end face of the rotary motion shaft. A Z-axis linear motion module perpendicular to the X-axis linear motion module is arranged on one side of the X-axis linear motion module, a rotating module capable of rotating in the horizontal direction is installed on the Z-axis linear motion module, a first tool rest and a second tool rest which are linearly arranged are installed on the rotating module, a rough turning tool is installed on the first tool rest, and a rough turning tool is installed on the second tool rest. A finish turning tool is installed on the second tool rest. Compared with a traditional chemical etching method, the machining device for the spherical grating has the advantages of being low in cost and easy to operate when used for machining the spherical grating, and the machining efficiency of large-breadth spherical gratings can be improved while the machining precision is guaranteed; the method has the advantage of effectively simplifying the spherical grating manufacturing process.

The present application relates to a kind of welding torch head device, welding carousel and internal welding machine, internal welding machine is equipped with welding carousel;The welding carousel includes carousel body, carousel body is equipped with welding wire feeding structure and welding torch head device;The welding torch head device includes torch head, torch box and base, the torch head is connected with torch box by torch head adjusting device, and the torch head is moved by torch head adjusting device;The torch box is connected with base by torch box adjusting device, and the torch box is moved by torch box adjusting device;Base adjusting device drives base movement.The present application provides a kind of welding torch head device, welding carousel and internal welding machine, wherein each adjusting mechanism of welding torch head device is completely integrated and built-in in torch box, so that all structures are compact;Through torch box adjusting device, torch box only needs to carry out linear motion, avoids existing hinged rotating structure, reduces overall volume, also reduces the energy consumption required for this action;Adjust torch head by torch head adjusting device, so that torch head adjusting process is more stable and reliable.

The invention discloses an ultrasonic transducer measuring device and a use method thereof, and the device comprises a transducer large-scale verification tool which is suitable for positioning a plurality of ultrasonic transducers to be measured; the performance parameter automatic acquisition device is provided with a detection end and an output end, the detection has three linear motion freedom degrees of an X axis, a Y axis and a Z axis, and the detection end sequentially obtains performance parameters of the to-be-detected ultrasonic transducers positioned to the transducer large-scale verification tool in a movable mode; and the upper computer is connected with the output end of the performance parameter automatic acquisition device and is suitable for receiving and processing the ultrasonic transducer performance parameters output by the performance parameter automatic acquisition device. According to the transducer large-scale verification tool, multi-station synchronous positioning is achieved, in combination with the movable detection end of the performance parameter automatic acquisition device, parameter detection of the transducers in batches can be efficiently completed, and the detection efficiency is greatly improved.

The invention belongs to the technical field of machining and conveying devices, and provides an automatic feeding device which comprises a feeding channel used for receiving and conveying workpieces to be machined; the material receiving block is located at the tail end of the movement path of the workpiece on the feeding channel; and the conveying piece comprises a material receiving disc and an abutting block which are movably arranged above the material receiving block, and the conveying piece has a material receiving state and a material feeding state. Compared with the prior art, the clamping type conveying piece composed of the material receiving disc and the abutting block is arranged, a complex multi-axis structure of a traditional mechanical arm is abandoned, and grabbing and pushing of workpieces are achieved by adopting simple linear motion to be matched with self-adaptive clamping action. In the material receiving state, the abutting block automatically rotates in the moving process and presses the side wall of the workpiece, and stable clamping is formed. In the conveying state, the workpieces are directly pushed to enter the clamping area, the action is coherent, the response is rapid, the equipment cost and the maintenance difficulty are remarkably reduced through the structure, the space is saved, and meanwhile the feeding rhythm is improved.

The invention relates to the crossing field of mechanical engineering and automatic control, discloses a rapid and accurate prediction positioning method and system for a linear motion module of an industrial robot, and aims to solve the problem of dynamic positioning deviation caused by factors such as elastic deformation, a mechanical gap and a heat effect under high-speed motion. The method comprises the following steps: collecting vibration, strain, temperature and motor load data in real time through a multi-mode sensor array; constructing a space-time dynamic state encoder based on module physical topology, and fusing time sequence convolution and a graph neural network to generate system state representation; predicting a future positioning error of the end effector by using an attention mechanism in combination with a future motion instruction; and a feedforward compensation signal is generated through an inverse dynamic model, and is superposed with an original instruction to form a composite driving instruction. According to the method, control normal form transition from passive feedback to active prediction is realized, and the positioning precision and the movement efficiency under the high-speed working condition are remarkably improved.

The invention relates to the field of stage mechanical equipment, in particular to a collaborative lifting device and method for a flexible cable and a follow-up cable, the device adopts a single-input double-output speed reducer to drive double winding drums to synchronously rotate in a diameter-differentiated mode, and electrical errors are eliminated through mechanical synchronization; a lead screw nut of the automatic rope arranging assembly is rigidly coupled with a guide rail, and a rope arranging wheel is driven to linearly move to achieve zero-deflection-angle rope arranging. The spring assembly compensates the temperature and stroke difference in real time; the double-lifting-point and double-section structure of the flexible cable drum ensures that the ice screen is stressed evenly, and a slip ring is arranged in the cable drum to achieve rotation power supply and take-up and pay-off synchronization; the guide wheel set and the anti-disorder device restrain a cable path, and the limiting and positioning adjusting device ensures that a hanging point is accurate. According to the invention, arrangement of multiple matrixes and real-time attitude reconstruction are supported, the requirements of rapid switching and complex actions in performance are met, mechanical synchronization, tension self-adaption and redundant safety protection are realized, and the accuracy and reliability of cable cooperative lifting are ensured.

A linear motion unit includes: a linear motion mechanism including a track member and a moving member; and a housing including a fastener. The fastener includes a first element, a second element meshable with the first element, a first slider, and a second slider located away from the first slider in longitudinal directions. The first slider and the second slider cause the first element and the second element to be separated from each other when the first slider and the second slider move away from each other, and cause the first element and the second element to mesh with each other when the first slider and the second slider move toward each other. The first slider and the second slider are fixable to the moving member.